Attachment-plug.



L. A. G. WIDENER.

ATTACHMENT PLUG.

APPLICATION FILED SEPT. 10, 1909.

Patented Jan. 11, 1910.

an ucm how LEO A. G, WID'ENER, OF NEW YORK, N. Y.

ATTACHMENT-PLUG.

Specification of Letters Patent.

Patented Jan. 11, 1910.

Application filed September 10, 1909. Serial No. 517,076.

To all whom it may concern:

Be it known that I, LEO A. G. VVIDENER, a citizen of the United States of America, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in Attachment-Plugs, of which the following is a specification. Y

This invention relates to attachment plugs for electric lights, and one of the principal objects of the same is to provide a plug which will permit the attachment to the socket without twisting the. wire connections.

Another object of the invention is to provide a plug having means for detachable connection of fuses.

Still another object of the invention is to provide a plug in which the threaded memher is detachable from the connectors and in which the latter are inclosed within a cap detachable from the threaded member and connected thereto by means of spring sockets, the cap being removable and connected by means of bayonet joints and studs.

- These and other objects may be attained.

by means of the construction illustrated in the accompanying drawings, in which,

Figure 1 is a side elevation and partial section of an attachment plug made in accordance with my invention. Fig. 2 is a side elevation of the threaded plug member. Fig. 3 is a similar view of the connector and fuse carrier. F i 4 is a side elevation and partial section of the cap for covering the connectors. Fig. 5 is a plan view ofthe connector. Fig. 6 is a bottom plan view of the cap. Fig. 7 is a detail perspective view of one of the spring sockets forthe contacts or connecting members.

Referring to the drawing, the numeral 1.

designates a glass plug or insulator having a threaded projection 2 adapted to be fitted within a socket in the walLor ceiling. The member 1 is provided with recesses in which are fitted metal sockets 3, said sockets each comprising two spring members partially separated by a slot 4 and having annular projecting portions 5 providing interior recesses, as shown in Figs. 1 and 3. Extending through the ends of the metal sockets 3 are the contact members 6.

The connector member of the plug comprises a glass or other insulator 7 having contact members 8 which extend through the same and provided with rings or enlargen'ients 9, which when fitted in the spring sockets 3 are held in place by therecesses inside the annular enlargements 5 of said sockets. Connected to the side of the members 7 are metal brackets 10 having outwardly extended spring'members 11. The brackets 10 are connected to the members 7 and to an extended pin or standard 12. Spring arms 13 are connected to the standard 12, and the fuses 14 can be readily inserted between the spring members 11 and 13 and-removed therefrom when they are burned out. Binding posts 15 serve to secure the brackets 16 which carry the spring arms 13 to the pin 12, and the connecting wires 17 are secured to these binding posts. A metal cap 18 having a contracted end 19 is provided at its opposite ends with oppositely disposed bayonet slots 20 adapted to be connected to the studs 0r screws 21 secured to the members 7. The cap 18 is provided with an insulator lining 22 provided with a boss or ring 23 which extends beyond the contracted end of the cap 18, said lining being held in place by means of a screw 24.

From the foregoing it will be obvious that the plug member 1 can be secured in the socket in the wall or ceiling, and thec'onnector 7 can then be attached to the member 1 by pushing the connectors 8 into the socket members 3, the resiliency of the memv bers 3 holding the parts together, owing to the enlargements 9 fitting into the interior recesses in the sockets 3Q The cap 18 can be readily removed for the-purpose of renewing the fuses 13 when they are burned out.

The parts will hold together and cannot be accidentally disconnected.

I claim g 1. An attachment plug comprising an insulator member having a threaded projection, contact members extending through said insulator, resilient sockets in said insulator; a plug member havin connectors extending through the same an adapted to be secured in the resilient sockets, fuse holders provided with spring arms for permitting the fuses to be detachably connected thereto, 00 nector wires connected to the fuse holder d, and a cap fitted over the fuse holders and detachably connected to the fuses, and a cap fitted over the fuses and plug member. held in place by bayonet slots and studs. 10

2. In a device of the character described, In testimony whereof I affix my signature the combination of a plug having resilient in presence of two Witnesses.

5 sockets therein, a member carrying connec- LEO A. G. WIDENER.

tors adapted to fit within said sockets and Witnesses: to be held therein by the resiliency of said BRUNO P. JAPP, sockets, spring arms for detachably holding JOHN GEHRIG. 

